PreconTM (Losartan Potassium) is the first of new class of antihypertensive, is an angiotensin II receptor (type AT1) antagonist.

PreconTM (Losartan Potassium) is the first of new class of antihypertensive, and its principal active metabolite block the vasoconstriction and aldosterone secreting effects of angiotensin II by selectively blocking the binding of angiotensin II to the AT1 receptor found in many tissues. PreconTM is now regarded as the first-line therapy option for treating high blood pressure.

Losartan potassium is contraindicated in patients who are hypersensitive to the active ingredient or any component of the drug.

Use in Pregnancy and Lactation

Angiotensin-II receptor antagonists should be avoided in pregnancy unless essential. They may adversely affect fetal and neonatal blood pressure control and renal function; skull defects and oligohy- dramnios have also been reported.

Information on the use of angiotensin-II receptor antagonists in breast-feeding is limited. They are not recommended in breast-feeding and alternative treatment options, with better established safety information during breast-feeding, are available.

Drug Interaction

No drug interactions of clinical significance have been identified. Drugs which have been studied in clinical pharmacokinetic trials include - (1) Hydrochlorothiazide, (2) Digoxin, (3) Warfarin, (4) Cimetidine, (5) Ketoconazole and (6) Phenobarbital.

Over Dosage

Significant lethality was observed in mice and rats after oral administration of 1000 mg/kg and 2000 mg/kg, respectively, about 44 and 170 times the maximum recommended human dose on a mg/m 2 basis. Limited data are available in regard to overdo sage in humans. The most likely manifestation of over dosage would be hypotension and tachycardia; bradycardia could occur from parasympathetic (vagal) stimulation. If symptomatic hypotension should occur, supportive treatment should be instituted. Neither losartan nor its active metabolite can be removed by hemodialysis.

Storage

Store in a cool & dry place, protect from light & moisture.
Keep out of reach of children.